<template>
  <div>
    <!-- 面包屑  -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <!-- 搜索与添加区 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear='getUserList'>
            <el-button @click="getUserList" slot="append" icon="el-icon-search"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible=true">添加用户</el-button>
        </el-col>
      </el-row>
      <!-- 用户列表区 -->
      <el-table :data="userlist" border stripe>
        <el-table-column type="index" label="序列"></el-table-column>
        <el-table-column prop="username" label="姓名"></el-table-column>
        <el-table-column prop="email" label="邮箱"></el-table-column>
        <el-table-column prop="mobile" label="电话"></el-table-column>
        <el-table-column prop="role_name" label="角色"></el-table-column>
        <el-table-column label="状态">
          <!-- 可以通过{{scope.row}}获取当前该行的数据   slot-scope叫带数据的插槽(作用域插槽) -->
          <template slot-scope="scope">
            <el-switch @change="userStateChanged(scope.row)" v-model="scope.row.mg_state">
            </el-switch>

          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!-- 修改 -->
            <el-button @click="showEditDialog(scope.row.id)" size="mini" type="primary" icon="el-icon-edit"></el-button>
            <!-- 删除 -->
            <el-button @click="ewmoveUserById(scope.row.id)" size="mini" type="danger" icon="el-icon-delete"></el-button>
            <!-- 分配 -->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button @click="setRole(scope.row)" size="mini" type="warning " icon="el-icon-setting"></el-button>
            </el-tooltip>

          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区 -->
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="queryInfo.pagenum" :page-sizes="[1, 2, 5, 10]" :page-size="queryInfo.pagesize" layout="total, sizes, prev, pager, next, jumper" :total="total">
      </el-pagination>
    </el-card>
    <!-- 添加用户弹窗 -->
    <el-dialog title="添加用户" @close="addDialogClosed" :visible.sync="addDialogVisible" width="50%">
      <!-- 主体区 -->
      <!-- :rules是表单的认证规则，需要搭配prop使用，来确定该行的验证用哪个 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>

        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部按钮 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户对话框 -->
    <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close='editDialogClosed'>
      <!-- 修改用户表单的信息 -->
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色的对话框 -->
    <el-dialog @close='setRoleDialogClosed' title="分配角色" :visible.sync="setRoleDialogVisible" width="50%">
      <div>
        <p>当前的用户:{{userInfo.username}}</p>
        <p>当前的角色:{{userInfo.role_name}}</p>
        <p>分配新角色：
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id">
            </el-option>
          </el-select>
        </p>

      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: 'Users',
  components: {},
  data () {
    //验证邮箱的自定义规则
    var checkEmail = (rule, value, cb) => {
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)) {
        return cb()
      }
      cb(new Error('请输入合法的邮箱'))
    }
    //验证手机号的自定义规则
    var checkMobile = (rule, value, cb) => {
      const regMobile = /^(0|86|17951)?(13[0-9]|15[12356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) {
        return cb()
      }
      cb(new Error('请输入合法的手机号'))
    }
    return {
      queryInfo: {
        query: '',
        pagenum: 1,//当前页数
        pagesize: 2,//当前每页显示多少数据
      },
      userlist: [],
      total: 0,//总数据
      addDialogVisible: false,//控制添加用户的弹窗显示与隐藏
      editDialogVisible: false,//修改用户弹窗的显示与隐藏
      addForm: {
        username: '',
        passwprd: '',
        email: '',
        mobile: '',
      },//添加用户表单数据
      addFormRules:
      {//添加表单验证规则
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '用户名的长度在3~10个字符之间', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '用户名的长度在6~15个字符之间', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      editForm: {

      },//修改数据时，该id的全部数据
      editFormRules: {//这是  修改用户表单按钮里  的验证规则
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      setRoleDialogVisible: false,//控制分配角色对话框的显示与隐藏
      userInfo: {},//需要被分配权限的用户信息
      rolesList: [],//所有角色的数据列表
      selectedRoleId: '',//已选中的分配新角色的id

    }
  },
  created () {
    this.getUserList()
  },
  methods: {
    async getUserList () {
      const { data: res } = await this.$http.get('users', { params: this.queryInfo })
      if (res.meta.status !== 200) return this.$message.error('获取用户列表失败')
      this.userlist = res.data.users
      this.total = res.data.total

    },
    //监听pagesize改变的事件就是 多选框页码
    handleSizeChange (newSize) {
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    //监听页码值切换触发
    handleCurrentChange (newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    //监听switch开关状态改变
    async userStateChanged (userinfo) {
      const { data: res } = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('更新用户状态失败')
      }
      this.$message.success('更新用户状态成功')
    },
    //监听添加用户框的关闭就会触发
    addDialogClosed () {
      this.$refs.addFormRef.resetFields()
    },
    //表单的确定按钮  validate函数是 表单认证是否成功 返回布尔值
    addUser () {
      this.$refs.addFormRef.validate(async vaild => {
        if (!vaild) return
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) {
          this.$message.error('添加用户失败')
        }
        this.$message.success('添加用户成功')
        //隐藏对话框
        this.addDialogVisible = false
        //重新刷新对话框信息
        this.getUserList()

      })

    },
    //获取修改用户对话框的数据
    async showEditDialog (id) {
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败')
      }
      this.editForm = res.data

      this.editDialogVisible = true
    },
    //修改用户对话框的关闭 就会重置数据
    editDialogClosed () {
      this.$refs.editFormRef.resetFields()
    },
    //修改用户的确定按钮
    editUser (id) {
      this.$refs.editFormRef.validate(async vaild => {
        if (!vaild) return
        const { data: res } = await this.$http.put('users/' + this.editForm.id, { email: this.editForm.email, mobile: this.editForm.mobile })
        if (res.meta.status !== 200) return this.$message.error('更新用户失败')
        this.editDialogVisible = false
        this.getUserList()
        this.$message.success('更新用户成功')
      })
    },
    //根据id删除数据
    async ewmoveUserById (id) {
      //先弹窗再删除
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'//图标
      }).catch(err => err)
      //用户点击确定会返回字符串 confirm
      //用户点击取消会返回字符串 cancel
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      const { data: res } = await this.$http.delete('users/' + id)
      if (res.meta.status !== 200) return this.$message.error('删除用户失败')
      this.$message.success('删除用户成功')
      this.getUserList()
    },
    //展示分配角色的对话框
    async setRole (userInfo) {
      this.userInfo = userInfo
      //在展时对话框之前，获取所以角色列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        this.$message.error('获取所有角色列表失败')
      }
      this.rolesList = res.data
      this.setRoleDialogVisible = true
    },
    //点击确定按钮分配新的角色
    async saveRoleInfo () {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择分配的角色')
      }
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.selectedRoleId })
      if (res.meta.status !== 200) {
        this.$message.error('更新角色失败')
      }
      this.$message.success('更新角色成功')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    //监听分配角色对话框的关闭事件
    setRoleDialogClosed () {
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  },
}

</script>
<style lang='less'  scoped>
</style>